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Python Python Basics (2015) Letter Game App Even or Odd Loop

Jonathan Camacho
Jonathan Camacho
1,504 Points
Posted by Jonathan Camacho
Jonathan Camacho
1,504 Points

I dont understand

I dont really understand what it's asking of me. How do I make a loop that runs until start is falsey and put the rest of the things inside of it. Wouldnt be a mess? And start is a variable, how can it run?

even.py 
import random
start = 5
while True:
    rand_num = random.randint(1, 99)
    if even_odd(rand_num):
        print("{} is even".format(rand_num))
    else:
        print("{} is odd".format(rand_num))
    start = start - 1
def even_odd(num):
    # If % 2 is 0, the number is even.
    # Since 0 is falsey, we have to invert it with not.
    return not num % 2

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

You can test if something is "falsey" just by naming it.

So, for example, a loop that runs until a variable named "go" is falsey would just be: "while go:"

This works good with counters, since 0 is "falsey" and everything else is "truthy". Just don't forget to change the value somewhere inside the loop!